L.A.'s most violent gangs

Los Angeles officials want to go after about 800 members of the city's most dangerous gangs, and on Thursday committed more than 200 LAPD officers to a force that will also include FBI agents, prosecutors and probation officers. Gangs on this list accounted for 6% of the city's violent crimes last year.

Rough boundaries: One south of Sunset, north of Beverly Boulevard, west of Vermont Avenue and east of Gower Street; second is south of 3rd Street, north of Olympic Boulevard and east of Normandie Avenue and Western Avenue (north and south of Wilshire Boulevard)

* Rollin' 40s

Race/ethnicity: African American

Gang injunction: Yes

Rough boundaries: South of Martin Luther King Boulevard, north of 59th Street, west of Vermont Avenue and east of Crenshaw Boulevard

* Rollin' 30s

Race/ethnicity: African American

Gang injunction: No

Rough boundaries: South of Jefferson Boulevard, north of Martin Luther King Boulevard, east of Vermont Avenue and just west of Western Avenue

* Rollin' 60s

Race/ethnicity: African American

Gang injunction: Yes

Rough boundaries: Hyde Park area, south of 52nd Street, north of 76th Street, west of Vermont Avenue and east of Buckler Avenue

* 18th Street Westside

Race/ethnicity: Latino

Gang injunction: Yes

Rough boundaries: Mostly south of the 10 Freeway, north of Adams Boulevard, west of Arlington Avenue and east of La Brea Avenue

* 204th Street

Race/ethnicity: Latino

Gang injunction: No

Rough boundaries: south of Torrance Boulevard, north of Del Amo, west of Western Avenue and east of Denker Avenue

* Avenues

Race/ethnicity: Latino

Gang injunction: Yes

Rough boundaries: All of Highland Park and parts of Cypress Park, Glassell Park and Eagle Rock, south of Colorado Boulevard, north and west of the 110 Freeway, and south and east of Eagle Rock Boulevard.

* Canoga Park Alabama

Race/ethnicity: Latino

Gang injunction: Yes

Rough boundaries: South of Nordhoff and Roscoe Boulevard (east of DeSoto Avenue), north of Vanowen Street, west of Winnetka Avenue and east of Topanga Canyon Boulevard

* Grape Street Crips

Race/ethnicity: African American

Gang injunction: Yes

Rough boundaries: south of 97th Street, north of 107th Street, west of Alameda Street and east of Wilmington